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hi other insectforum,

I found this little Collembola sp. on a chopped treetrunk (old beech)
The wings are really short and the white spotted patterns on the abdomen typical.
Is this species Ectopsocus petersi?

size: ~2mm
place: Amsterdam forest

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pic 2

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You meant psocoptera, not a collembola. Otherwise I can not help

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Yes, you are right.., something went wrong in my head.
I think I've to update my software ;)

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Hello, Robert!



Looks like it (a nymph).
http://www.brc.ac...llery.aspx

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hi Juergen,

Thankx for your reaction,

Why do you think this psocoptera is a nymph?
Perhabs there are also Ectopsocus sp. with short wings?
E. briggsi is very common, couldn't it be E. briggsi?

Robert,

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Hello, Robert!



Ectopsocus petersi and briggsi (*) are very numerous here in the garden and at the house, but I have never seen a brachypterous individual. The nymphs always were smaller than the adults - indicating that they were really nymphs.

(*) At least I think, they are these two species. They look quite different, matching clearly the pictures of the two here:

http://www.brc.ac...llery.aspx

If I am right, then E. petersi is more abundant here than briggsi (95:5).



See above: (*)

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I 've just read a article in Dutch where Noordijk & Berg found some macropterous and brachypteer Ectopsocus briggsi! (long-winged and short-winged) in Amsterdam and other places.
So I think the short-winged above here, could be a brachypterous Ectopsocus.

I'm gonna look better to the difference of these species in the pictures.
Thanks again!